Directory.SetLastAccessTime Method
Assembly: mscorlib (in mscorlib.dll)
public static void SetLastAccessTime ( String path, DateTime lastAccessTime )
public static function SetLastAccessTime ( path : String, lastAccessTime : DateTime )
Parameters
- path
The file or directory for which to set the access date and time information.
- lastAccessTime
A DateTime containing the value to set for the access date and time of path. This value is expressed in local time.
| Exception type | Condition |
|---|---|
| The specified path was not found. | |
| path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by InvalidPathChars. | |
| path is a null reference (Nothing in Visual Basic). | |
| The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters and file names must be less than 260 characters. | |
| The caller does not have the required permission. | |
| The current operating system is not Microsoft Windows NT or later. | |
| lastAccessTime specifies a value outside the range of dates or times permitted for this operation. |
The path parameter is permitted to specify relative or absolute path information. Relative path information is interpreted as relative to the current working directory. To obtain the current working directory, see GetCurrentDirectory.
The path parameter is not case-sensitive.
The following table lists examples of other typical or related I/O tasks.
| To do this... | See the example in this topic... |
|---|---|
| Create a text file. | |
| Write to a text file. | |
| Read from a text file. | |
| Delete a directory. | |
| See the subdirectories of a directory. | |
| Find the size of a directory. |
Windows 95, Windows 98, Windows 98 Second Edition Platform Note: These operating systems do not support this method.
The following code example demonstrates SetLastAccessTime.
using System; using System.IO; class Test { public static void Main() { try { string path = @"c:\MyDir"; if (!Directory.Exists(path)) { Directory.CreateDirectory(path); } Directory.SetLastAccessTime(path, new DateTime(1985,5,4)); // Get the last access time of a well-known directory. DateTime dt = Directory.GetLastAccessTime(path); Console.WriteLine("The last access time for this directory was {0}", dt); // Update the last access time. Directory.SetLastAccessTime(path, DateTime.Now); dt = Directory.GetLastAccessTime(path); Console.WriteLine("The last access time for this directory was {0}", dt); } catch (Exception e) { Console.WriteLine("The process failed: {0}", e.ToString()); } } }
import System.*;
import System.IO.*;
class Test
{
public static void main(String[] args)
{
try {
String path = "c:\\MyDir";
if (!(Directory.Exists(path))) {
Directory.CreateDirectory(path);
}
Directory.SetLastAccessTime(path, new DateTime(1985, 5, 4));
// Get the last access time of a well-known directory.
DateTime dt = Directory.GetLastAccessTime(path);
Console.WriteLine("The last access time for this directory was {0}",
dt);
// Update the last access time.
Directory.SetLastAccessTime(path, DateTime.get_Now());
dt = Directory.GetLastAccessTime(path);
Console.WriteLine("The last access time for this directory was {0}",
dt);
}
catch (System.Exception e) {
Console.WriteLine("The process failed: {0}", e.ToString());
}
} //main
} //Test
- FileIOPermission for writing to the specified file or directory. Associated enumeration: FileIOPermissionAccess.Write
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
